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Patent US2561868A successfully refreshed from Google Patents.
US2561868A
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Gaseous electric discharge lamp
Assignee: General Electric Co
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Filing: 1947-12-15
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Granted: 1951-07-24
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Expires: 1967-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jenkins Henry Grainger
- 👤 Miles Edward Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:07
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/10; H01J61/103; H01J61/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1951137A
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US1990146A
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GB374291A
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US1922281A
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US2121333A
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CH178684A
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US2217315A
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US2298581A
Cited
US2305583A
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US2337745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |